Attach a resistance band to a door anchor. Place the door anchor at the bottom of a door. Connect the other end of the band to a D-ring on an ankle strap. Take one step back and turn sideways so that attached leg is farthest from the door. Standing on the near leg allowing the attached leg to cross in front of the standing leg.
Pull the attached leg out and up to side as far as possible while keeping torso stationary. Return and repeat. Continue using the opposite leg.